The Big Bang

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Across
  1. 4. The Big Bang occurred 13.8 ________ years ago
  2. 5. If something is blueshifted, it is moving _______ us
  3. 7. The number of planets
  4. 10. When a galaxy is moving away from us, it is __________ (no spaces)
  5. 13. If something is redshifted it is moving ________ from us
  6. 14. The type of planet that Venus is
  7. 16. The depending factor in a star's evolution
  8. 17. The abbreviation for cosmic microwave background radiation
  9. 18. The distance between peaks of a wave
  10. 21. Something you can find in the Kuiper belt
  11. 23. The solar system formed 4.6 __________ years ago
  12. 24. The type of galaxy that the Milky Way is
  13. 25. The other name for a gaseous planet
  14. 27. A H-R diagram shows the relationship between a stars ___________ and its temperature
Down
  1. 1. A huge expansion of very dense matter (no spaces)
  2. 2. What terrestrial planets are made of
  3. 3. What creates stars
  4. 6. The amount of stuff in a space
  5. 8. What Jovian planets are made of
  6. 9. What cosmic microwave background radiation sounds like
  7. 11. What Pluto is (no spaces)
  8. 12. The belt that is located between Jupiter and Mars
  9. 15. The belt that is located past Neptune
  10. 19. The sun's __________ holds the solar system together
  11. 20. The way that planets move around the sun
  12. 22. What the universe has been doing since the Big Bang
  13. 26. The earth _________ on its axis
  14. 27. In the Habitable Zone, ________________ has to exist on the surface of a planet (no spaces)
  15. 28. On the H-R diagram, our sun is in the _____________ (no spaces)